/* Write your styles */
.app{
    background: pink;
    display: flex;
    flex-direction: "row";
    position: fixed;
    top: 0px;
    left: 0px;
    right: 0px;
    bottom: 0px;
}

.up_down{
    display: flex;
    flex-direction: column;
}

.up_down button{
    flex:1;
    display: flex;
    justify-content: center;
    align-items: center;
  
}



.left_right{
    display: flex;
    flex:3;
    flex-direction: row;
}
.left_right button{
    flex:1;
    display: flex;
    justify-content: center;
    align-items: center;

}

.tools{
  height: 100px;
  display: flex;
  flex-direction: row;

  padding: 10px;
}
.tools div{
    display: flex;
    align-items: center;
    justify-content: center;
    flex:1;
    box-sizing: border-box;
    padding: 10px
}
.stop{
    height: 80px;
    border-radius: 10px;
    background: red;
    color: #fff;
    border: none;
}